| 摘要 |
A gamma control circuit and a gamma control method are provided to supply various gamma voltages by selecting the highest gamma voltage and the lowest gamma voltage from a plurality of voltages. A gamma control circuit includes first, second, and third gamma voltage selectors(510,530,550), and a gamma voltage generator(570). The first gamma voltage selector selects the highest gamma voltage and the lowest gamma voltage from a plurality of first voltages between a first power supply voltage and a second power supply voltage. The second gamma voltage selector receives the highest gamma voltage and the lowest gamma voltage and selects a first intermediate voltage and a second intermediate voltage. The third gamma voltage selector receives the highest gamma voltage, the lowest gamma voltage, the first intermediate voltage, and the second intermediate voltage and generates a plurality of reference voltages. The gamma voltage generator receives the highest gamma voltage, the lowest gamma voltage, and the plurality of reference voltages and outputs the gamma voltages.
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